Fix `project_tree_restorer_spec` flakiness

Closes #35323

See merge request gitlab-org/gitlab!19427

Revamp Merge Request documentation

See merge request gitlab-org/gitlab!18644

Fixed a typo in the "Keyboard Shortcuts" pop-up

See merge request gitlab-org/gitlab!19217

Migrate issue boards specs to Jest & VTU

See merge request gitlab-org/gitlab!19265

Expand sections by default

Closes #35176

See merge request gitlab-org/gitlab!19320

Fix old content and improve structure, and remove
repetition. Also brings back content deleted by accident

Fail if a test leaves the browser logged in

See merge request gitlab-org/gitlab!18978

All QA tests expect to be able to log in at the start of the test.

That's not possible if a test leaves the browser logged in when it
finishes. Normally this isn't a problem because Capybara resets the
session after each test. But it does that in an `after` block, so when
a test, like this one, logs in in an `after(:all) block, the browser
returns to a logged in state *after* Capybara has logged it out. And
then the next test will fail.

E.g.: https://gitlab.com/gitlab-org/gitlab/issues/34736

This adds a `config.after(:context)` block to fail if a test
leaves the browser logged in.

Improve the only/except extendable jobs

See merge request gitlab-org/gitlab!17956

Move several features from create MR doc to
review MR doc. Also splits security reports into
it's own section, to allow for one ULTIMATE badge

Notice about missing support for Auto Test when using .buildpacks file

See merge request gitlab-org/gitlab!6930

Add gitlab managed apps section to dev docs

See merge request gitlab-org/gitlab!19388

Merge branch '13070-bad-interpolation-of-ci_pipeline_id-when-passing-variables-to-an-another-project-multipipeline-projects' into 'master'

Allow CI bridge to expand variables that use pipeline ID and URL

See merge request gitlab-org/gitlab!18875

Allows bridge jobs to expand variables that use
CI_PIPELINE_ID and CI_PIPELINE_URL

SCIM pagination startIndex handles string input

See merge request gitlab-org/gitlab!19331

Bump Markdown timeout from 3 to 6 seconds in test

Closes #35269

See merge request gitlab-org/gitlab!19408

Refactor ProjectTreeRestorer

See merge request gitlab-org/gitlab!18024

We've been seeing increased flaky failures due to the timeout
exceeding 3 seconds. With the additional regexp in
e38e2adc, we see that performance has
gotten worse:

```
1.376477   0.005843   1.382320 (  1.423449)
```

Previously it was:

```
0.566795 0.000933 0.567728 ( 0.569076)
```

Closes https://gitlab.com/gitlab-org/gitlab/issues/35269

Adds tests and splits a method to simplify testing

Add SharedAttributes to Geo QA scenario

See merge request gitlab-org/gitlab!19328

Migrate vue shared components  specs to Jest & VTU

See merge request gitlab-org/gitlab!19269

Migrated vue shared components specs that rely on tooltips
to Jest & Vue Test Utils

Fix migration to sync issuables with unknown states

See merge request gitlab-org/gitlab!19373

Signed-off-by: Rémy Coutable <remy@rymai.me>

Various improvements to analytics topics

See merge request gitlab-org/gitlab!18982

Link to Current Omnibus Doc for gitlab.yml.example

See merge request gitlab-org/gitlab!19152

Signed-off-by: Rémy Coutable <remy@rymai.me>

Allow migration to sync state_id for issuables with unknown states.
Prevents errors when upgrading GitLab.

Explicitly remove index by name

See merge request gitlab-org/gitlab!19362

Fix broken spec/controllers/projects/releases_controller_spec.rb

Closes #35276

See merge request gitlab-org/gitlab!19393

e8bc01a1 changed the behavior so that
that all unauthenticated access to endpoints results in a 302
redirection instead of a 401 Unauthorized.

Closes https://gitlab.com/gitlab-org/gitlab/issues/35276

Improves the performance of the Redis set cache

See merge request gitlab-org/gitlab!19125

Testing has shown that treating membership optimistically reduces the
number of Redis calls substantially.

`include?` will only perform an EXISTS if SISMEMBER returns negative.

`fetch` will only perform an EXISTS if there are no values.

`read` uses SSCAN to avoid Redis lockup on huge sets

Don't run Review App jobs for backstage changes

Closes #30121

See merge request gitlab-org/gitlab!17822